81 - 3 = 78
81 - -3 = 84
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92 = 81 91/2 = 3 Thus, 81 - 3 = 78.
4 squared is 16 The square root of 4 is 2 Hence, 4 squared is 14 greater than the square root of 4.
Huh? The square root of 49 is 7. 4 squared is 16 Take it from there
One half foot squared is one quarter of a square foot (36 square inches).
17.65 meters squared